- Exclusion criteria will include The presence of any red flags (i.e., tumor, metabolic diseases, rheumatoid arthritis, osteoporosis, prolonged history of steroid use, etc.), a history of frozen shoulder, disorders of the acromioclavicular joint, degenerative arthritis of the glenohumeral joint, calcifying tendonitis, shoulder instability, posttraumatic disorders, or shoulder surgery and/or elbow, hand, wrist and blatantly misdiagnosed cervical spine disorders (e.g., cervical radiculopathy).